| 摘要 |
<p>The invention provides an inexpensive hinge (1, 12) that has a height adjustment and a strong structure. The invention comprises a metal ball (7) and a retaining ring (8, 11) between the hinge pin (6, 13) and the height adjustment screw (9) to create a bearing that reduces wear and tear. The retaining ring (8, 11) holds the metal ball (7) within the hinge leaf rolling (4) if the leaf parts (2, 3) are separate. However, the retaining ring allows the ball to move if the height adjustment screw is turned.</p> |
